/*
	QMPlay2 is a video and audio player.
	Copyright (C) 2010-2017  Błażej Szczygieł

	This program is free software: you can redistribute it and/or modify
	it under the terms of the GNU Lesser General Public License as published
	by the Free Software Foundation, either version 3 of the License, or
	(at your option) any later version.

	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU Lesser General Public License for more details.

	You should have received a copy of the GNU Lesser General Public License
	along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#pragma once

#include <QString>
#include <QVector>
#include <QPair>

struct AVIOInterruptCB;
struct AVIOContext;

class OggHelper
{
	Q_DISABLE_COPY(OggHelper)

public:
	using Chain = QPair<qint64, qint64>;
	using Chains = QVector<Chain>;

	OggHelper(const QString &url, int track, qint64 size, const AVIOInterruptCB &interruptCB);
	OggHelper(const QString &url, bool &isAborted);
	~OggHelper();

	Chains getOggChains(bool &ok);

private:
	inline quint32 getSerial(const quint8 *header) const;
	inline bool getBeginOfStream(const quint8 *header) const;
	inline bool getEndOfStream(const quint8 *header) const;
	inline quint8 getPageSegmentsCount(const quint8 *header) const;

public:
	AVIOContext *io, *pb;
	bool *isAborted;
	qint64 size;
	int track;
};
